The influence of time of precommercial thinning on the colonization of Douglas-fir by three species of root-colonizing insects.
Document Type
Article
Publication Date
1-1-1986
Abstract
In plantations of Pseudotsuga menziesii in W Oregon, precommercial thinning resulted in significantly increased abundances of insect vectors of black-stain root disease. Hylastes nigrinus, Pissodes fasciatus and Steremnius carinatus were monitored. Abundances of these beetle species were significantly higher in thinned plots, but numbers of H. nigrinus and P. fasciatus caught by unbaited traps in plots thinned in May was reduced relative to plots thinned in September or January. -from Authors
Publication Source (Journal or Book title)
Canadian Journal of Forest Research
First Page
745
Last Page
749
Recommended Citation
Witcosky, J., Schowalter, T., & Hansen, E. (1986). The influence of time of precommercial thinning on the colonization of Douglas-fir by three species of root-colonizing insects.. Canadian Journal of Forest Research, 16 (4), 745-749. https://doi.org/10.1139/x86-133